Samsung GT-B7702 User manual

GSM TELEPHONE
GT-B7702
GSM TELEPHONE CONTENTS
Notice
All functionality, features, specifications and o
ther product information provided in this docu
ment including, but not limited to, the benefit
s, design, pricing, components, performance,
availability, and capabiliti-es of the product
are subject to change without notice or oblig
ation. Samsung reserves the right to make
changes to this document and the product
described herein, at anytime, without
obligation on Samsung to provide notification
of such change.
1. Safety Precautions
2. Specification
3. Product Function
4. Array course control
5. Exploded View and Parts List
6. Main Electrical Parts List
7. Block Diagrams
8. PCB Diagrams
9. Flow Chart of Troubleshooting
10. Reference data
11. Disassembly and Assembly
instructions

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1. Safety Precautions
1-1
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1-1. Repair Precaution
―Repair in Shield Box, during detailed tuning.
Take specially care of tuning or test, because the specification of cellular phone is sensitive for
surrounding interference(RF noise).
―Be careful to use akind of magnetic object or tool, because performance of parts is damaged by
the influence of magnetic force.
―Surely use astandard screwdriver when you disassemble this product, otherwise screw will be
worn away.
―Use athicken twisted wire when you measure level.
Athicken twisted wire has low resistance, therefore error of measurement is few.
―Repair after separate Test Pack and Set because for short danger (for example an overcurrent
and furious flames of parts etc) when you repair board in condition of connecting Test Pack and
tuning on.
―Take specially care of soldering, because Land of PCB is small and weak in heat.
―Surely tune on/off while using AC power plug, because arepair of battery charger is dangerous
when tuning ON/OFF PBA and Connector after disassembling charger.
―Don't use as you pleases after change other material than replacement registered on SEC System.
Otherwise engineer in charge isn't charged with problem that you don't keep this rules.

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Safety Precautions
1-2
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1-2. ESD(Electrostatically Sensitive Devices) Precaution
Several semiconductor may be damaged easily by static electricity. Such parts are called by ESD
(Electrostatically Sensitive Devices), for example IC,BGA chip etc. Read Precaution below.
You can prevent from ESD damage by static electricity.
―Remove static electricity remained your body before you touch semiconductor or parts with
semiconductor. There are ways that you touch an earthed place or wear static electricity prevention
string on wrist.
―Use earthed soldering steel when you connect or disconnect ESD.
―Use soldering removing tool to break static electricity. Otherwise ESD will be damaged by static
electricity.
―Don't unpack until you set up ESD on product. Because most of ESD are packed by box and
aluminum plate to have conductive power,they are prevented from static electricity.
―You must maintain electric contact between ESD and place due to be set up until ESD is
connected completely to the proper place or acircuit board.

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2. Specification
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2-1
2-1. GSM General Specification
EGSM 900 DCS1800 PCS1900 TD-SCDMA
Freq. Band[MHz]
Uplink/Downlink
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990 2010~2024
ARFCN range 0~124 &
975~1023 512~885 512~810 10054~10121
Tx/Rx spacing 45MHz 95MHz 80MHz 0
Mod. Bit rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
1.28Mcps
Time Slot Period/Frame
Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms 675us/5ms
Modulation
GSM/
GPRS 0.3GMSK 0.3GMSK 0.3GMSK
QPSK
EDGE 8PSK 8PSK 8PSK
MS Power 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm +24dBm~-49dBm
Power Class 4
(max +33dBm)
1
(max +30dBm)
1
(max +30dBm)
2
(max +24dBm)
Sensitivity -102dBm -100dBm -100dBm -108dBm
TDMA Mux 8 8 8 7
Cell Radius 35Km 2Km 2Km 11Km

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Specification
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2-2
2-2. GSM TX power class
TX Power
control level PCS1900
030±2dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4 dBm
11 8±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
TX Power
control level GSM900
5 33±2 dBm
6 31±2 dBm
7 29±2 dBm
8 27±2 dBm
9 25±2 dBm
10 23±2 dBm
11 21±2 dBm
12 19±2 dBm
13 17±2 dBm
14 15±2 dBm
15 13±2 dBm
16 11±3 dBm
17 9±3dBm
18 7±3 dBm
19 5±3 dBm
TX Power
control level DCS1800
0 30±2 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±4 dBm
10 10±4 dBm
11 8±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm

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Specification
2-3
TX Power
control level
GSM900
GSM850
8 27±3 dBm
9 25±3 dBm
10 23±3 dBm
11 21±3 dBm
12 19±3 dBm
13 17±3 dBm
14 15±3 dBm
15 13±3 dBm
16 11±5 dBm
17 9±5 dBm
18 7±5 dBm
19 5±5 dBm
TX Power
control level DCS1800
226-4/+3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
812±3dBm
910±3dBm
10 14±3 dBm
11 12±4 dBm
12 10±4 dBm
13 8±4dBm
14 6±4 dBm
15 4±4 dBm
2-3. GSM EDGE TX power class
TX Power
control level PCS1900
226-4/+3dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 12±3 dBm
9 10±3 dBm
10 14±3 dBm
11 12±4 dBm
12 10±4 dBm
13 8±4dBm
14 6±4 dBm
15 4±4 dBm

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3. Product Function
3-1
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Main Function
-TD-SCDMA HSDPA 2.8Mbps
-Dual Standby (Dual TX, Dual RX)
-5M AF Camera
-Bluetooth V.2.0
-Stereo Bluetooth Headset
-3.2" WQVGA 262K TFTwith Touch screen
-EXT. Memory
-SMS/MMS/E-Mail
-WAP 2.0 / Java MIDP 2.0
-MP3, AAC, MP4, 3GPP Decoding
-Video Recording and Messaging
-GSM/GPRS/EDGE Class 10
-FM radio, GPS
-CMCC Customized Service

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4. Array course control
4-1
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4-1. Software Adjustments
Test Cable (GH39-01160A)
Test Jig (GH99-36900A)
RF Test Cable (GH39-00985A) Adapter (GH99-38251A)

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Array course control
4-2
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4-2. Software Downloading
4-2-1. Pre-requsite for Downloading
•Downloader Program(Kellan_Downloader_1.0.exe)
•GT-B7702 Mobile Phone
•Data Cable,USB cable
•Binary file, TFS file
4-2-2. S/W Downloader Program
■Load the binary download program by executing the
“Kellan_Downloader_1.0.exe”
Master Download (USB Communication)
1. Select the download mode you want.
-check MASTER
2.Select the USB.
3.Select the Erase option.
4.Push the Partition file and Select the file you want to download
5.Push the Advanced Configuration. and Check FormatBBM
=> Push the Start Button
.
Slave Download (Serial Communication)
1. Select the download mode you want.
-check SLAVE
2.Select the connected serial Port and the Rate of speed
6.Select the file you want to download
7.Select the check box, the mode you want to download.
-if the binary file wanted, check only 'BIN'
-if the tfs file wanted, check only 'TFS'
-if all the files wanted, check 'BIN+TFS'
=> Push the Start Button

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Array course control
4-3
This Document can not be used without Samsung's authorization